Catalyst component for high activity and high stereoselectivity in olefin polymerization

ABSTRACT

What is disclosed is a method for preparing a catalyst system and a catalyst system for polymerizing or copolymerizing an α-olefin. Catalyst component (A) is obtained by a process of reacting a magnesium complex (A-1) containing acid salts of group IB-VIIIB elements formed by contacting a magnesium halide with an acid salt solution of group IB-VIIIB metals or spherical particles adducts, an internal electron donor (A-2) of diester or diether or composite compounds, and a titanium compound (A-3). The catalyst compound (A) is contacted with a silicon compound (B) and an organoaluminium compound (C) to complete the catalyst system providing a good balance of catalyst performance in terms of activity and stereo-specificity.

BACKGROUND

1. Field of the Invention

The present invention relates to new catalyst components for thepolymerization of olefin comprising magnesium halide and salt ofIB-VIIIB elements, titanium halide and internal donors.

2. Description of the Related Art

The modern Ziegler Nana catalysts comprising magnesium halide, titaniumhalide and internal donors are well known in art and has been preparedby various methods. One method consists of co-grinding the magnesiumhalide with internal electron donors until the product shows a surfacearea higher than 20 m²/g and thereafter reacting the ground product withthe Ti compound. These methods of preparing solid Ziegler-Natta typecatalyst components are disclosed in U.S. Pat. Nos. 4,220,554;4,294,721; 4,315,835; 4,330,649; 4,439,540; 4,816,433; and 4,978,648.Another method known in the art describes reaction of titaniumtetrachloride compounds with organoaluminum halides in the presence ofmagnesium halide composite to prepare catalyst components, which isdescribed in U.S. Pat. Nos. 4,330,648; 4,314,911; and 4,474,703;WO/8912649; WO/8600625; and CN 1837247. However, these catalystcomponents are not satisfactory in terms of polymerization activity andstereo-specificity of resulting polymer chain.

There have also been efforts to achieve balanced catalyst properties interms of activity and stereo-specificity. Mitsui PetrochemicalIndustries, Ltd. have published olefin polymerization catalystsemploying specific silicon compounds which has improved polymerizationactivities and stereo-specificity (e.g., U.S. Pat. No. 4,990,479, EP0350170 B2, and CN 1040379) remarkably compared to those of theconventional catalyst components. The presence of electron donors havealso been found to allow preparation of catalyst components endowed notonly with high activity, but also with a high stereo-specificity andsolid catalysts have been prepared with internal electron donors. Commoninternal electron donor compounds, incorporated in the solidZiegler-Natta catalysts components during preparation of such catalystsinclude ethers, ketones, amines, alcohols, phenols, phosphines, andsilanes. Also, external electron donors have been employedsimultaneously with solid catalyst components for olefin polymerizationto improve stereo-specificity and organosilicon compounds are commonlyused as external electron donors. Examples of such catalyst system aredescribed in U.S. Pat. Nos. 4,107,414; 4,186,107; 4,226,963; 4,347,160;4,382,019; 4,435,550; 4,465,782; 4,522,930; 4,530,912; 4,532,313;4,560,671; 4,657,882; 5,208,302; 5,902,765; 5,948,872; 6,121,483; and6,770,586. EP 0361494 B1 discloses solid catalyst components comprising,as an internal donor, 1,3-diether, which is capable of forming complexeswith magnesium halide and TiCl₄ in such a way that the solid catalystcomponents can achieve good results in terms of good activity andstereo-specificity. EP 0622380 B2 demonstrates that the solid catalystcomponents containing 1,3-diether produces polymers having very highmelt flow rates with good activity while EP 0728769 B1 refers toelectron donors of cyclopolyenic 1,3-diethers conferring a furtherincrease of activity. Notwithstanding the good polymerization activityas well as stereo-specificity of the catalyst components containingvarious electron donors, the balance of properties still should beimproved in terms of catalyst activity and stereo-specificity.

SUMMARY OF THE INVENTION

The present invention provides a method for polymerizing orcopolymerizing an α-olefin using the catalyst system consisting of:

[1] a catalyst component (A) obtained by a process comprising reactionscontacting a magnesium complex (A-1) containing acid salts of groupIB-VIIIB elements formed by contacting magnesium halide either as asolid or in a liquid medium represented by formula MgX_(n)(OR)_(2-n)with an acid salt solution of group IB-VIIIB metals represented byformula M_(m)Y_(p), with internal electron donor (A-2) of diester ordiether or composite compounds and titanium compound (A-3) of thegeneral formula Ti(OR)_(l)X′_(4-l), where X′ is a halogen atom; M is atleast one metal selected from group IB-VIIIB; X and Y are acid radicalssuch as Cl⁻, Br⁻, I⁻, NO₃ ⁻, NO₂ ⁻, RCOO⁻, SO4²⁻, ClO₃ ⁻, BrO₃ ⁻, IO₃ ⁻,ClO₄—, R(COO)₂ ²⁻; R is a hydrocarbon group having from 1 to 10 carbonatoms; n is an integer from 0 to 2; m and p are numbers from 1.0 to 5.0;l is a number from 0 to 4; and

[2] a silicon compound represented by the general formula:SiRi(OR′)_(4-l) and SiRi(NR2′)_(4-l), wherein R is hydrogen, an alkylgroup, or an aryl group; R′ is alkyl group or aryl group, and l is anumber from 0 to 4; and

[3] an organoaluminium compound.

The obtained catalyst components are able to offer a good balance ofcatalyst performance in terms of activity and stereo-specificity. One ofthe advantages of the obtained catalyst components of the presentinvention is that it can produce polyolefins, particularly polypropyleneand its copolymers, with minimized solvent extractable, whichconsequently increases the product physical properties. Heptaneinsoluble (HI %) and ¹³C NMR results of resonances associated withdifferent pentads exhibit the improved solvent insolubility andisotacticity.

DETAILED DESCRIPTION

Catalyst components (A) of the present invention can be prepared by aprocess comprising formation of magnesium complex (A-1) containing acidsalts of group IB-VIIIB elements and subsequent contact with internalelectron donors (A-2) and titanium compound (A-3).

In one embodiment of present invention, magnesium complex (A-1)containing acid salts of group IB-VIIIB elements can be preparedco-crystallization or solidification from a solution containing bothmagnesium halide represented by formula MgX_(n)(OR)_(2-n) and acid saltsof group IB-VIIIB elements represented by formula M_(m)Y_(p). Forexample, magnesium halide and a transition metal halide can be dissolvedtogether in a solvent like alkyl alcohol or alkyl ether to form asolution containing both the magnesium halide and the transition metalhalide and then solidified together either by lowering temperature orintroducing into a hydrocarbon medium. The catalyst components (A) canthen be obtained by subsequent contact reaction of solid forms ofmagnesium complex (A-1) with internal electron donor (A-2) and titaniumcompound (A-3).

In another embodiment of present invention, magnesium complex (A-1)solution is formed by dissolving magnesium halide, acid salts of groupIB-VIIIB, and internal electron donor (A-2) together in a solvent suchas alcohol, ether, or phosphorus compound, and can then be contacteddirectly by titanium compound (A-3) to precipitate the catalystcomponents (A). For example, magnesium chloride (MgX₂), transition metalhalide (M_(m)Y_(p)), and internal electron donor (A-2) can be dissolvedtogether in ethyl alcohol to form a solution and then titanium compound(A-3) is charged directly into the solution to precipitate the solidcatalyst component (A). The metal salt compounds (M_(m)Y_(p)) is used inthe ratio of 0.01 to 50 mol per magnesium halide, preferably 0.05 to 10mol per mol magnesium halide, and the titanium compound is used in anamount 0.01 to 1000 mol per mol magnesium halide, preferably 0.1 to 200mol per mol magnesium halide.

The solid titanium catalyst component (A) obtained as above contains, asits essential ingredients, metal, titanium, halogen, and an electrondonor. In this solid catalyst component (A), an atomic ratio ofhalogen/titanium is about 2 to 200, preferably about 4 to 100; a molarratio of the electron donor/titanium is about 0.01 to 100, preferablyabout 0.2 to 10; and an atomic ratio of metal/titanium is about 1 to100, preferably about 2 to 50.

Typical examples of acid salts of group IB-VIIIB compounds representedby formula M_(m)Y_(p) which may be employed for the present inventionare: cerium (III) fluoride, cerium (III) chloride, cerium (III) bromide,cerium (III) iodide, chromium (II) fluoride, chromium (II) chloride,chromium (II) bromide, chromium (II) iodide, chromium (III) fluoride,chromium (III) chloride, chromium (III) bromide, chromium (III) iodide,chromium (III) nitrate, cobalt (II) fluoride, cobalt (II) chloride,cobalt (II) bromide, cobalt (II) iodide, copper (II) fluoride, copper(II) chloride, copper (II) bromide, copper (II) iodide, copper (II)nitrate, dysprosium (II) chloride, dysprosium (II) bromide, dysprosium(II) iodide, dysprosium (III) fluoride, dysprosium (III) chloride,dysprosium (III) bromide, dysprosium (III) iodide, erbium fluoride,erbium chloride, erbium bromide, erbium iodide, erbium nitrate, europium(II) fluoride, europium (II) chloride, europium (II) bromide, europium(II) iodide, europium (III) fluoride, europium (III) chloride, europium(III) bromide, europium (III) iodide, gadolinium (II) chloride,gadolinium (III) fluoride, gadolinium (III) chloride, gadolinium (III)bromide, gadolinium (III) iodide, gadolinium (III) nitrate, gold (III)fluoride, gold (III) chloride, gold (III) bromide, gold (III) iodide,holmium fluoride, holmium chloride, holmium bromide, holmium iodide,iron (II) fluoride, iron (II) chloride, iron (II) bromide, iron (II)iodide, iron (III) fluoride, iron (III) chloride, iron (III) bromide,iron (III) iodide, iron (II) nitrate, iron (III) nitrate, Iron (II)sulfate, Iron (II) perchlorate, lanthanum fluoride, lanthanum chloride,lanthanum bromide, lanthanum iodide, lanthanum nitrate, lutetiumfluoride, lutetium chloride, lutetium bromide, lutetium iodide,manganese (II) fluoride, manganese (II) chloride, manganese (II)bromide, manganese (II) iodide, manganese (II) acetate, manganese (II)nitrate, molybdenum (II) fluoride, molybdenum (II) chloride, molybdenum(II) bromide, molybdenum (II) iodide, molybdenum (III) fluoride,molybdenum (III) chloride, molybdenum (III) bromide, molybdenum (III)iodide, neodymium fluoride, neodymium chloride, neodymium bromide,neodymium iodide, neodymium nitrate, nickel (II) fluoride, nickel (II)chloride, nickel (II) bromide, nickel (II) iodide, nickel (II) nitrate,niobium (III) fluoride, niobium (III) chloride, niobium (III) bromide,osmium (III) chloride, osmium (III) bromide, palladium (II) fluoride,palladium (II) chloride, palladium (II) bromide, palladium (II) iodide,palladium (II) nitrate, praseodymium fluoride, praseodymium chloride,praseodymium bromide, praseodymium iodide, praseodymium nitrate, rhenium(III) fluoride, rhenium (III) chloride, rhenium (III) bromide, rhenium(III) iodide, rhodium (III) fluoride, rhodium (III) chloride, rhodium(III) bromide, rhodium (III) iodide, rubidium fluoride, rubidiumchloride, rubidium bromide, rubidium iodide, rubidium nitrate, ruthenium(III) fluoride, ruthenium (III) chloride, ruthenium (III) bromide,ruthenium (III) iodide, samarium (II) fluoride, samarium (II) chloride,samarium (II) bromide, samarium (II) iodide, samarium (III) fluoride,samarium (III) chloride, samarium (III) bromide, samarium (III) iodide,scandium fluoride, scandium chloride, scandium bromide, scandium iodide,scandium nitrate, thulium fluoride, thulium chloride, thulium bromide,thulium iodide, thulium nitrate, tungsten (II) chloride, tungsten (II)bromide, tungsten (II) iodide, tungsten (III) bromide, tungsten (III)iodide, vanadium (II) fluoride, vanadium (II) chloride, vanadium (II)bromide, vanadium (II) iodide, vanadium (III) fluoride, vanadium (III)chloride, vanadium (III) bromide, vanadium (III) iodide, ytterbium (II)chloride, ytterbium (II) bromide, ytterbium (II) iodide, ytterbium (III)fluoride, ytterbium (III) chloride, yttrium fluoride, yttrium chloride,yttrium bromide, yttrium nitrate, zinc fluoride, zinc chloride, zincbromide, zinc iodide, zinc nitrate, zinc acetate, zinc chlorate, zincperchlorate, and zirconyl chloride.

Other examples of acid salts of group IA-VA compounds that may also beused in the present invention and are represented by formula M_(m)Y_(p)are: aluminum fluoride, aluminum chloride, aluminum bromide, aluminumiodide, aluminum nitrate, lithium fluoride, lithium chloride, lithiumbromide, lithium iodide, lithium nitrate, lithium acetate, lithiummetaborate, lithium chlorate, lithium perchlorate, magnesium fluoride,magnesium chloride, magnesium bromide, magnesium iodide, magnesiumacetate, magnesium nitrate, magnesium perchlorate, magnesium sulfate,magnesium chlorate, magnesium bromate, magnesium iodate, tin (II)fluoride, tin (II) chloride, tin (II) bromide, tin (II) iodide, tin (IV)fluoride, tin (IV) chloride, tin (IV) bromide, and tin (IV) iodide.

Magnesium halide compounds that may also be used in the presentinvention and are represented by formula MgX_(n)(OR)_(2-n) are:magnesium fluoride, magnesium chloride, magnesium bromide, magnesiumiodide, magnesium acetate, magnesium nitrate, magnesium perchlorate, andmagnesium sulfate. Besides those magnesium compounds, complex compoundsor double compounds of these magnesium compounds can be used with metalsalt compounds, or mixtures of these magnesium compounds with othermetal salt compounds. The magnesium compounds may be used in combinationof two or more kinds of metal salt compounds. Various metal saltcompounds other than those mentioned above can also be used forpreparing the solid catalyst component (A), but it is preferred that themagnesium compound is present in the form of a halogen-containingmagnesium compound in the solid catalyst component (A) finally obtained.The compositions obtained according to the aforementioned processes inthe preparation of the catalyst component may be further brought intocontact one or more times with the titanium compound, and also may bewashed with an organic solvent.

According to a preferred embodiment of the present invention, internalelectron donor (A-2) can also be used to make the catalyst component (A)either as a single compound or as combination with two or threecompounds. The electron donor compound (A-2) improves thestereo-specificity and activity of the catalyst components of presentinvention. The electron donor compound (A-2) which can be used for thepresent invention includes oxygen-containing electron donors, forexample, alcohols, phenols, ketones, aldehydes, carboxylic acids,malonic acid, esters of organic acids or inorganic acids, ethers such asmonoethers, diethers or polyethers, etc.; and nitrogen-containingelectron donors such as ammonia, amines, nitriles, isocyanates. Also,dialkyl esters derived from dicarboxylic acids such as phthalic acid,naphthalene dicarboxylic acid, malic acid, succinic acid, Glutaric acid,and diols such as 1,2-diols, 1,3-diols, 1,4-diols, 1,5-diols, anddiethers derived from diols can also be used in accordance with theteachings the present invention.

Preferred electron donor compounds (A-2) include polycarboxylates anddiethers, and more preferred are esters of aromatic polycarboxylates and1,3 diethers. The most preferred electron donor compounds (A-2) areesters of aromatic dicarboxylates and cyclopolyenic 1,3 diethers or2-substituted 1,3 diethers. Specific examples of suitable aromaticpolycarboxylates compounds are: phthalic acidnaphthalene-1,2-dicarboxylic acid, naphthalene-2,3-dicarboxylic acid,5,6,7,8-tetrahydronaphthalene-1,2-dicarboxylic acid,5,6,7,8-tetrahydronaphthalene-2,3-dicarboxylic acid,indane-4,5-dicarboxylic acid, indane-5,6-dicarboxylic acid, etc., inwhich the alkyl groups may be any of methyl, ethyl, n-propyl, isopropyl,n-butyl, isobutyl, t-butyl, n-pentyl, 1-methylbutyl, 2-methylbutyl,3-methylbutyl, 1,1-dimethylpropyl, 1-methylpentyl, 2-methylpentyl,3-methylpentyl, 4-methylpentyl, 1-ethylbutyl, 2-ethyl, n-hexyl,cyclohexyl, n-heptyl, n-octyl, n-nonyl, 2-methylhexyl, 3-methylhexyl,4-methylhexyl, 2-ethylhexyl, 3-ethylhexyl, 4-ethylhexyl, 2-ethylpentyl,and 3-ethylpentyl groups. Preferably, the organic group in the estermoiety of these esters is a linear or branched aliphatic hydrocarbonresidue having at least 4 carbon atoms.

Specific examples of suitable disubstituted malonate compounds are:diethyl-2(1-trifluoromethylethyl)-2-benzylmalonate, diethyl2-(1-trifluoromethylethyl)-2-methylmalonate, diethyl2-methyltrimethylsilyl-2-methylmalonate, diethyl2-p-chlorobenzyl-2-isopropylmalonate, diethyl2-piperidyl-2-methylmalonate, diethyl2-(1-trifluoromethyl-1-methylethyl)-2-methylmalonate, andbis(2-trimethylsilylethyl) 2-isopropyl-2-isobutylmalonatebis(p-chlorobenzyl) 2-cyclohexyl-2-methylmalonate.

Particularly preferred are disubstituted succinate compounds: diethyl2,2-dimethylsuccinate, diethyl 2-ethyl-2-methylsuccinate, diethyl2-benzyl-2-isopropylsuccinate, diethyl2-(cyclohexylmethyl)-2-isobutylsuccinate, diethyl2-cyclopentyl-2-n-propylsuccinate, diethyl 2,2-diisobutylsuccinate,diethyl 2-cyclohexyl-2-ethylsuccinate, diethyl2-isopropyl-2-methylsuccinate, diethyl 2,2-diisopropyl diethyl2-isobutyl-2-ethylsuccinate, diethyl2-(1,1,1-trifluoro-2-propyl)-2-methylsuccinate, diethyl2-isopentyl-2-isobutylsuccinate, diethyl 2-phenyl-2-n-butylsuccinate,diisobutyl 2,2-dimethylsuccinate, diisobutyl 2-ethyl-2-methylsuccinate,diisobutyl 2-benzyl-2-isopropylsuccinate, diisobutyl2-(cyclohexylmethyl)-2-isobutylsuccinate, diisobutyl2-cyclopentyl-2-n-propylsuccinate, diisobutyl 2,2-diisobutylsuccinate,diisobutyl 2-cyclohexyl-2-ethylsuccinate, diisobutyl2-isopropyl-2-methylsuccinate, diisobutyl 2-isobutyl-2-ethylsuccinate,diisobutyl 2-(1,1,1-trifluoro-2-propyl)-2-methylsuccinate, diisobutyl2-isopentyl-2-isobutylsuccinate, diisobutyl 2,2-diisopropylsuccinate,diisobutyl 2-phenyl-2-n-propylsuccinate, dineopentyl2,2-dimethylsuccinate, dineopentyl 2-ethyl-2-methylsuccinate,dineopentyl 2-benzyl-2-isopropylsuccinate, dineopentyl2-(cyclohexylmethyl)-2-isobutylsuccinate, dineopentyl2-cyclopentyl-2-n-propylsuccinate, dineopentyl 2,2-diisobutylsuccinate,dineopentyl 2-cyclohexyl-2-ethylsuccinate, dineopentyl2-isopropyl-2-methylsuccinate, dineopentyl 2-isobutyl-2-ethylsuccinate,dineopentyl 2-(1,1,1-trifluoro-2-propyl)-2-methylsuccinate, dineopentyl2,2-diisopropylsuccinate, dineopentyl 2-isopentyl-2-isobutylsuccinate,and dineopentyl 2-phenyl-2-n-butylsuccinate.

Specific examples of suitable polycarboxylate compounds derived fromdiols are: 2,4-pentanediol di(m-chlorobenzoate), 2,4-pentanedioldi(o-bromobenzoate), 2,4-pentanediol di(p-methylbenzoate),2,4-pentanediol di(p-tert-butylbenzoate), 2,4-pentanedioldi(p-butylbenzoate), 2,4-pentanediol monobenzoate monocinnamate,2,4-pentanediol dicinnamate, heptan-6-ene-2,4-diol dibenzoate,3,5-heptandiol dibenzoate, 2,6-dimethyl-3,5-heptandiol dibenzoate,6-methyl-2,4-heptanediol dibenzoate, 6-methyl-2,4-heptanedioldi(p-chlorobenzoate), 6-methyl-2,4-heptanediol di(p-methylbenzoate),6-methyl-2,4-heptanediol di(m-methylbenzoate), 6-methyl-2,4-heptanedioldipivalate, 3-methyl-2,4-pentanediol di(p-chlorobenzoate),3-methyl-2,4-pentanediol di(p-methylbenzoate), 3-butyl-2,4-pentanedioldi(p-methylbenzoate), 3-methyl-2,4-pentanediol di(p-tert-butylbenzoate),3-methyl-2,4-pentanediol monobenzonate monocinnamate,3,3-dimethyl-2,4-pentandiol dibenzoate, 3,3-dimethyl-2,4-pentandiolmonobenzonate monocinnamate, 3-ethyl-2,4-pentandiol dibenzoate,3-butyl-2,4-pentandiol dibenzoate, 3-allyl-2,4-pentandiol dibenzoate,4-methyl-3,5-heptandiol dibenzoate, 2-ethyl-1,3-hexandiol dibenzoate,2,2,4-trimethyl-1,3-pentandiol dibenzoate, 4-methyl-3,5-octandioldibenzoate, 5-methyl-4,6-nonandiol dibenzoate,2-methyl-1,3-diphenyl-1,3-propylene-glycol dibenzoate,1,3-diphenyl-1,3-propylene-glycol dipropionate,2-methyl-1,3-diphenyl-1,3-propylene-glycol dipropionate, 2-methyl1,3-diphenyl-1,3-propylene-glycol diacetate,2,2-dimethyl-1,3-diphenyl-1,3-propylene-glycol dibenzoate,2,2-dimethyl-1,3-diphenyl-1,3-propylene-glycol dipropionate,2-methyl-1-phenyl-1,3-butandiol dibenzoate,2-methyl-1-phenyl-1,3-butandiol dipivalate, heptan-6-ene-2,4-dioldipivalate, 2,2,4,6,6-pentamethyl-3,5-hexandiol dibenzoate,1,3-di-tert-butyl-2-ethyl-1,3-propylene-glycol dibenzoate,1,3-diphenyl-1,3-propylene-glycol diacetate,2-(2-furyl)-2-methyl-1,3-butandiol dibenzoate,1,1-di(acryloyloxymethyl)-3-cyclohexene2-isoamyl-2-isopropyl-1,3-propylene-glycol dibenzoate,2-isoamyl-2-isopropyl-1,3-propylene-glycol di(p-chlorobenzoate),2-isoamyl-2-isopropyl-1,3-propylene-glycol di(m-chlorobenzoate),2-isoamyl-2-isopropyl-1,3-propylene-glycol di(p-methoxybenzoate),2-isoamyl-2-isopropyl-1,3-propylene-glycol di(p-methylbenzoate),2-isoamyl-2-isopropyl-1,3-propylene-glycol monobenzoate monopropionate,2-isoamyl-2-isopropyl-1,3-propylene-glycol dipropionate,2-isoamyl-2-isopropyl-1,3-propylene-glycol diacrylate,2-isoamyl-2-isopropyl-1,3-propylene-glycol dicinnamate,2,2-diisobutyl-1,3-propylene-glycol dibenzoate,2-isoamyl-2-isopropyl-1,3-propylene-glycol, 2,2′-biphenyl dicarboxylate,2-isoamyl-2-isopropyl-1,3-propylene-glycol phthalate,1,3-diisopropyl-1,3-propylene-glycol di(4-butylbenzoate),3-methyl-1-trifluoromethyl-2,4-pentandiol dibenzoate,1,1,1-trifluoro-3-methyl-2,4-pentandiol dibenzoate,4,4,4-trifluoro-1-(2-naphthyl)-1,3-butandiol dibenzoate,2-ethyl-2-methyl-1,3-propylene-glycol dipropylformate, 2,4-pentanedioldi(p-fluoromethylbenzoate), 4,6-nonandiol dibenzoate, 2,4-pentandioldi(2-furancarboxylate), 2-amino-1-phenyl-1,3-propylene-glycoldibenzoate, 2,2-dimethyl-1,3-propylene-glycol dibenzoate,3-butyl-3-methyl-2,4-pentandiol dibenzoate, 3,6-dimethyl-2,4-heptandioldibenzoate, 2,2,6,6-tetramethyl-3,5-heptandiol dibenzoate,2,3-diisopropyl-1,4-butandiol dibenzoate, 2,3-dimethyl-1,4-butandioldibenzoate, 2,3-diethyl-1,4-butandiol dibenzoate,2,3-dibutyl-1,4-butandiol dibenzoate, 2,3-diisopropyl-1,4-butandioldibutyrate, 2,5-hexandiol dicinnamate, 2,5-dimethyl-2,5-hexandioldibenzoate, 2,5-dimethyl-2,5-hexandiol dipropionate,2,5-dimethyl-hexa-3-yne-2,5-diol dibenzoate, hexa-3-yne-2,5-dioldibenzoate, (T) hexa-3-yne-2,5-diol dibenzoate, (S) hexa-3-yne-2,5-dioldi(2-furancarboxylate), 1,1-bis(benzoyloxyethyl)cyclohexane2,2-dimethyl-1,5-pentanediol dibenzoate, 1,5-diphenyl-1,5-pentanedioldibenzoate, 1,5-diphenyl-1,5-pentanediol dipropionate,2,6-dimethyl-2,6-heptanediol dibenzoate,bis(2-benzoyloxynaphthyl)methane 3,4-dibutyl-1,6-hexandiol dibenzoate,2,2′-biphenyldimethanol dipivalate, 2,2′-biphenyldimethanol dibenzoate,2,2′-biphenyldimethanol dipropionate, 2,2′-binaphthyldimethanoldibenzoate, 9,9-bis((m-methoxybenzoyloxy)methyl)fluorene,9,9-bis((m-chlorobenzoyloxy)methyl)fluorene,9,9-bis((p-chlorobenzoyloxy)methyl)fluorene,9,9-bis(cinnamoyloxymethyl)fluorene,9-(benzoyloxymethyl)-9-(propionyloxymethyl)fluorene,9,9-bis(propionyloxymethyl)fluorene, 9,9-bis(acryloyloxymethyl)fluorene,and 9,9-bis(pivalyloxymethyl)fluorene.

Specific examples of suitable diether compounds derived are:1,1-bis(methoxymethyl)-cyclopentadiene;1,1-bis(methoxymethyl)-2,3,4,5-tetramethylcyclopentadiene;1,1-bis(methoxymethyl)-2,3,4,5-tetraphenylcyclopentadiene;1,1-bis(methoxymethyl)indene; 1,1-bis(methoxymethyl)-2,3-dimethylindene;1,1-bis(methoxymethyl)-4,7-dimethylindene;1,1-bis(methoxymethyl)-4-phenyl-2-methylindene;1,1-bis(methoxymethyl)-7-(3,3,3-trifluoropropypindene;1,1-bis(methoxymethyl)-7-trimethylsilylindene;1,1-bis(methoxymethyl)-7-trifluoromethylindene;1,1-bis(methoxymethyl)-7-methylindene;1,1-bis(methoxymethyl-7-cyclopentylindene;1,1-bis(methoxymethyl)-7-isopropylindene;1,1-bis(methoxymethyl)-7-cyclohexylindene;1,1-bis(methoxymethyl)-7-tert-butylindene;1,1-bis(methoxymethyl)-7-tert-butyl-2-methylindene;1,1-bis(methoxymethyl)-7-phenylindene;1,1-bis(methoxymethyl)-2-phenylindene; 9,9-bis(methoxymethyl)-fluorene;9,9-bis(methoxymethyl)-2,3,6,7-tetramethylfluorene;9,9-bis(methoxymethyl)-2,3,4,5,6,7-hexafluorofluorene;9,9-bis(methoxymethyl)-2,3-benzofluorene;9,9-bis(methoxymethyl)-2,3,6,7-dibenzofluorene;9,9-bis(methoxymethyl)-2,7-diisopropylfluorene;9,9-bis(methoxymethyl)-1,8-dichlorofluorene;9,9-bis(methoxymethyl)-2,7-dicyclopentylfluorene;9,9-bis(methoxymethyl)-1,8-difluorofluorene;9,9-bis(methoxymethyl)-1,2,3,4-tetrahydrofluorene;9,9-bis(methoxymethyl)-1,2,3,4,5,6,7,8-octahydrofluorene;9,9-bis(methoxymethyl)-4-tert-butylfluorene;1,1-bis(a-methoxybenzyl)indene;1,1-bis(1′-methoxyethyl)-5,6-dichloroindene;9,9-bis(a-methoxybenzyl)fluorene; 9,9-bis(11-methoxyethyl)fluorene;9-methoxymethyl-9-(1′-methoxyethyl)-2,3,6,7-tetrafluorofluorene;9-methoxymethyl-9-pentoxymethylfluorene;9-methoxymethyl-9-ethoxymethylfluorene;9-methoxymethyl-9-(1′-methoxyethyl)-fluorene; and9-methoxymethyl-9-[2-(2-methoxypropyl)]-fluorene, 2-methyl,2-isopropyl-1,3-dimethoxypropane, 2,2-diisobutyl-1,3-dimethoxypropane,2,2-diphenyl-1,3-dimethoxypropane, 2,2-dibenzyl-1,3-dimethoxypropane,2,2-bis(cyclohexylmethyl)1,3-dimethoxypropane,2,2-diisobutyl-1,3-dibutoxypropane, 2,2-diisobutyl-1,3-ethoxypropane,2-isopentyl, 2-isopropyl-1,3-dimethoxypropane,2,2,4-trimethyl-1,3-dimethoxypentane, 1,1min-bismethoxymethylcyclohexane, 2,2 min bis(methoxymethyl)norbornane,2-isopropyl-2-3,7-dimethyloctyl-1,3-dimethoxypropane,2,2-diisopropyl-1,3-dimethoxypropane, 2-isopropyl2-cyclohexylmethyl-1,3-dimethoxypropane,2,2-diisopentyl-1,3-dimethoxypropane,2-isopropyl-2-cyclohexyl-1,3-dimethoxypropane,2-isopropyl-2-cyclopentyl-1,3-dimethoxypropane,2,2-dicyclopentyl-1,3-dimethoxypropane,2-heptyl-2-pentyl-1,3-dimethoxypropane,2,2-dicyclohexyl-1,3-dimethoxypropane,2-isopropyl-2-isobutyl-1,3-dimethoxypropane, and2,2-dipropyl-1,3-dimethoxypropane.

According to present invention, catalyst component (A) is prepared bycontacting magnesium complex (A-1) containing acid salts of groupIB-VIIIB elements with a titanium compound (A-3) of the general formulaTi(OR)_(l)X′_(4-l), wherein X′ is a halogen atom; R is a hydrocarbongroup having from 1 to 10 carbon atoms, and l is an integer from 0 to 4.Titanium compound (A-4) of the general formula Ti(OR)_(l)X′_(4-l) canalso be employed for the present invention, such as:

[1] titanium tetrahalides, such as TiCl₄, TiBr₄ and TiI₄;

[2] alkoxytitanium trihalides, such as Ti(OCH₃)Cl₃, Ti(OC₂H₅)Cl₃,Ti(O-n-C₄H₉)Cl₃, Ti(OC₂H₅)Br₃ and Ti(O-iso-C₄H₉)Br₃;

[3] dialkoxytitanium dihalides, such as Ti(OCH₃)₂Cl₂, Ti(OC₂H₅)₂Cl₂,Ti(O-n-C₄H₉)₂Cl₂, and Ti(OC₂H₅)₂Br₂;

[4] trialkoxytitanium monohalides, such as Ti(OCH₃)₃Cl, Ti(OC₂H₅)₃Cl,Ti(O-n-C₄H₉)₃Cl and Ti(OC₂H₅)₃Br;

[5] tetraalkoxytitaniums, such as Ti(OCH₃)₄, Ti(OC₂H₅)₄, Ti(O-n-C₄H₉)₄,Ti(O-iso-C₄H₉)₄ and Ti(O-2-ethylhexyl); and

[6] other compounds such as Ti[O—C(CH₃)CH—CO—CH]₂Cl₂, Ti[N(C₂H₅)₂]Cl₃,Ti[N(C₆H₅)₂]Cl₃, Ti(C₆H₅COO)Cl₃, [N(C₄H₉)₄]₂TiCl₆, [N(CH₃)₄]Ti₂Cl₉,TiBr₄, TiCl₃OSO₂C₆H₅, and LiTi(OC₃H₇)₂Cl₃.

Silicon compound (B) represented by the general formulaeSiR_(l)(OR′)_(4-l) and SiRi(NR2′)_(4-l), can also be employed as anexternal electron donor, wherein R is hydrogen; alkyl group or arylgroup; R′ is alkyl group or aryl group, and m is represented as 0-4. Oneor more of an electron donor compound (B) can be used either singly oras combined improving the stereo-specificity of the olefin polymersproduced. Suitable silicon compounds (B) include alkoxygroup-havingorganosilicon compounds, nitrogen-containing compounds,phosphorus-containing compounds, and oxygen-containing compounds. Ofthose, especially preferred are alkoxy group-having andnitrogen-containing organosilicon compounds. Specific examples of thesecompounds include, but are not limited to, trimethylmethoxysilane,triethylmethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane,diphenyldimethoxysilane, dimethyldiethoxysilane,diphenyldimethoxysilane, diphenyldiethoxysilane,dicyclohexyldimethoxysilane, cyclohexylmethyldimethoxysilane,cyclohexyl-iso-butyldimethoxysilane,cyclohexyl-1,1,2-trimethylpropyldimethoxysilane,α-naphthyl-1,1,2-trimethylpropyldimethoxysilane,n-tetradecanyl-1,1,2-trimethylpropyldimethoxysilane,cyclopentylmethyldimethoxysilane, cyclopentylethyldimethoxysilane,cyclopentylpropyldimethoxysilane, cyclopentyl-t-butyldimethoxysilane,cyclopentyl-1,1,2-trimethylpropyldimethoxysilane,dicyclopentyldimethoxysilane, cyclopentylcyclohexyldimethoxysilane,t-butylmethyldimethoxysilane, t-butylethyldimethoxysilane,t-butylpropyldimethoxysilane, di-t-butyldimethoxysilane,diisopropyldimethoxysilane, isopropylisobutyldimethoxysilane,γ-chloropropyltrimethoxysilane, methyltriethoxysilane,ethyltriethoxysilane, vinyltriethoxysilane, butyltriethoxysilane,phenyltriethoxysilane, γ-aminopropyltriethoxysilane,chlorotriethoxysilane, ethyltriisopropoxysilane, vinyltributoxysilane,methyl-t-butoxydimethoxysilane, isopropyl-t-butoxydimethoxysilane,cyclopentyl-t-butoxydimethoxysilane,1,1,2-trimethylpropyltrimethoxysilane, ethyl silicate, butyl silicate,trimethylphenoxysilane, methyltrialloxysilane,vinyltris(β-methoxyethoxy)silane, vinyltrisacetoxysilane,dimethyltetraethoxydisiloxane, 2 2-(Butylamino)ethanol4,9-Dibutyl-1,6-dioxa-4,9-diaza-5-sila-spiro[4.4]nonane, 32-(Ethylamino)ethanol4,9-Diethyl-1,6-dioxa-4,9-diaza-5-sila-spiro[4.4]nonane, 4N-Phenylethanolamine4,9-Diphenyl-1,6-dioxa-4,9-diaza-5-sila-spiro[4.4]nonane, 5N-Benzylethanolamine4,9-Dibenzyl-1,6-dioxa-4,9-diaza-5-sila-spiro[4.4]nonane,6.alpha.-[2-5,11-Dimethyl-2,8-diphenyl-(Methylamino)ethyl]benzyl1,7-dioxa-5,11-diaza-6-alcohol sila-spiro[5.5]undecane, 7(R)-(−)-2-tert-Butylamino-1-4,9-Di-tert-butyl-2,7-phenylethanoldiphenyl-1,6-dioxa-4,9-diaza-5-sila-spiro[4.4]nonane, 82-(Isopropylamino)-1,2-4,9-Diisopropyl-2,3,7,8-diphenylethanoltetraphenyl-1,6-dioxa-4,9-diaza-5-sila-spiro[4.4]nonane,4,9-Di-tert-butyl-1,6-dioxa-4,9-diaza-5-sila-spiro[4.4]nonane,4,9-Di-tert-butyl-1,6-dioxa-4,9-diaza-5-sila-spiro[4.4]nonane,4,9-Di-tert-butyl-1,6-dioxa-4,9-diaza-5-sila-spiro[4.4]nonane,4,9-Dibutyl-1,6-dioxa-4,9-diaza-5-sila-spiro[4.4]nonane,4,9-Diethyl-1,6-dioxa-4,9-diaza-5-sila-spiro[4.4]nonane,4,9-Diphenyl-1,6-dioxa-4,9-diaza-5-sila-Spiro[4.4]nonane,4,9-Dibenzyl-1,6-dioxa-4,9-diaza-5-sila-spiro[4.4]nonane,5,11-Dimethyl-2,8-diphenyl-1,7-dioxa-5,11-diaza-6-sila-spiro[5.5]undecane,4,9-Di-tert-butyl-2,7-diphenyl-1,6-dioxa-4,9-diaza-5-sila-spiro[4.4]nonane,and4,9-Diisopropyl-2,3,7,8-tetraphenyl-1,6-dioxa-4,9-diaza-5-sila-spiro[4.4]nonane.One or more of these organosilicon compounds may be used herein eithersingly or as combined.

Organoaluminium compound (C) of the catalyst system of the presentinvention consists of any of alkyl groups, halogen atoms, hydrogen atomsand alkoxy groups, aluminoxanes, and their mixtures. They may includetrialkylaluminiums such as trimethylaluminium, triethylaluminium,triisopropylaluminium, triisobutylaluminium, and trioctylaluminium;dialkylaluminium monochlorides such as diethylaluminium monochloride,diisopropylaluminium monochloride, diisobutylaluminium monochloride, anddioctylaluminium monochloride; alkylaluminium sesquihalides such asethylaluminium sesquichloride; and linear aluminoxanes such asmethylaluminoxanec. Preferred organoaluminium compounds aretrialkylaluminiums with lower alkyl groups each having from 1 to 5carbon atoms, and more preferred are trimethylaluminium,triethylaluminium, triisopropylaluminium, and triisobutylaluminium. Oneor more of these organoaluminium compounds may be used either singly oras combined. Other acceptable organoaluminium compound (C) includescompounds containing two or more aluminum atoms linked to each otherthrough hetero-atoms, such as:

(C₂H₅)₂Al—O—(C₂H₅)₂;

(C₂H₅)₂Al—N(C₆H₅)—Al(C₂H₅)₂; and

(C₂H₅)₂Al—O—SO₂—OAl(C₂H₅)₂.

The catalyst system according to present invention is not limited bypolymerization process, and polymerization of olefins may be performedin the presence of, or in the absence of, an organic solvent. Olefinmonomers may be used in the gaseous or liquid state depending on thepolymerization as slurry, liquid or gas phase processes, or in acombination of liquid and gas phase processes using separate reactors,all of which can be done either by batch or continuously. The polyolefinmay be directly obtained from gas phase process, or obtained byisolation and recovery of solvent from the slurry process, according toconventionally known methods. The catalyst components (A), (B) and (C),when employed, can be added to the polymerization reactor simultaneouslyor sequentially. It is preferred to mix components (B) and (C) first andthen contact the resultant mixture with component (A) prior to thepolymerization. The olefin monomer can be added prior to, with, or afterthe addition of the Ziegler-Natta type catalyst system to thepolymerization reactor. It is preferred to add the olefin monomer afterthe addition of the Ziegler-Natta type catalyst system.

The catalyst component (A) thus obtained is combined with theaforementioned silicon compound (B) and an organoaluminium compound (C)for the polymerization of olefins. The organoaluminium compound (C) isused in a molar ratio of from 1 to 1000 per atom of titanium in thecatalyst component, and the silicon compound (B) is used in a molarratio of less than 1, preferably from 0.005 to 0.5 per mole of theorganoaluminium compound (C). The molecular weight of the polymers maybe controlled by known methods, preferably by using hydrogen. With thecatalysts produced according to the present invention, molecular weightmay be suitably controlled with hydrogen when the polymerization iscarried out at relatively low temperatures, e.g., from about 30° C. toabout 105° C. This control of molecular weight may be evidenced by ameasurable positive change of the Melt Flow Rate (MFR).

There are no particular restrictions on the polymerization conditionsfor production of polyolefins by the methods of the present invention,such as the polymerization temperature, polymerization time,polymerization pressure, or monomer concentration. The polymerizationtemperature is generally from about 40° C. to about 90° C., and thepolymerization pressure is generally 1 atmosphere or higher. Thecatalyst systems of the present invention may be pre-contacted withsmall quantities of olefin monomer, well known in the art aspre-polymerization, in a hydrocarbon solvent at a temperature of about60° C. or lower for a time sufficient to produce a quantity of polymerfrom about 0.5 to 3 times the weight of the catalyst. If such apre-polymerization is done in liquid or gaseous monomer, the quantity ofresultant polymer is generally up to 1000 times the catalyst weight.

Examples of olefins homo-polymerized or copolymerized by use of thecatalyst component and the catalyst of the present invention includeolefins of the general formula CH═CHR, where R is H or C₁₋₁₈ straight orbranched alkyl, such as ethylene, propylene, butene-1,pentene-1,4-methylpentene-1, octene-1, and the like. While the catalystcomponent and the catalyst of the present invention may be employed inthe processes in which ethylene is polymerized, it is more desirable toemploy the catalyst component and the catalyst of the present inventionin processes in which polypropylene or higher olefins are polymerized.Processes involving the homo-polymerization or copolymerization ofpropylene are preferred.

EXAMPLES

To facilitate a better understanding of the present invention, thefollowing examples of certain aspects of some embodiments are given. Inno way should the following examples be read to limit, or define, theentire scope of the invention.

The solid catalyst composition and polymers in the examples weremeasured according to the methods described herein. Composition analyseswere conducted by ICP emission analysis method to determine metalcontent in the solid catalyst component.

The solvent insoluble (HI %) of polypropylene (PP) is the weightpercentage of heptane insoluble portion in the PP measured by extractingthe powdery PP sample using a Soxhlet extractor with heptane solvent for6 hours.

¹³C NMR characterization was conducted on a Avance 400 MHz spectrometerand polymer solution was made by dissolving in1,1,2,2-tetrachloroethane-d₂. By setting the central line of the tripletof 1,1,2,2-tetrachloroethane-d₂ at δ=74.3 ppm downfield oftetramethylsilane (TMS), a logical common origin of the relativechemical shift scale refers to the 1,1,2,2-tetrachloroethane-d₂ solvent,disclosed in publications Macromolecules 1997, 30, 6251 and J. Am. Chem.Soc., 1996, 118 (40), 9623. The chemical shift values of typical pentadsfor methyl and methylene resonances in ¹³C NMR spectrums are assignedand calculated. The results of ¹³C NMR assignment and calculations arereported in Table 16.

Example 1

a. Preparation of the Catalyst

11.0 g anhydrous magnesium chloride, 1.47 Iron (II) chloride, 20.0 ganhydrous ethyl alcohol and 250 ml mineral oil was introduced into a1000 ml reactor with powered stirrer and drawing pipe under inert gasatmosphere. The closed system was heated to 120° C., under stirring andan adduct of MgCl₂ with ethyl alcohol was obtained, which is a solutionat 120° C. mixed with mineral oil. The closed reactor was brought up toa pressure of 8 psig by introducing nitrogen gas. The valve was openedto allow the mixture to flow through, drawing into a 2 liter vesselcontaining 800 ml heptane, which was cooled and maintained at atemperature of −40° C. The final temperature of the emulsion dischargedinto vessel was below 0° C., after collecting the emulsion. Thespheroidal solid product in the emulsion was separated by decanting andfiltering, and then washed with heptane and dried under vacuum. Theforegoing operations were carried out under an atmosphere of nitrogengas. Totally about 35 g of 10MgCl₂.FeCl₂.30C₂H₅OH was obtained.

A Schlenk type reactor equipped with a powered stirrer and a frittedfilter disc was used to prepare the catalyst. To the reactor purged withnitrogen, 200 ml TiCl₄ was introduced and cooled below −20° C. 7 g ofthe above spheroidal solid 10MgCl₂.FeCl₂.30C₂H₅OH was added slowly andmaintained for 10 minutes at this temperature with agitation. Thetemperature of the mixture was gradually raised to 60° C., and 1.0 g ofdiisobutyl phthalate was then added. The temperature of the mixture wasthen increased to 110° C. and maintained for 2 hours with stirring. Theresulting solid was filtered and 200 ml TiCl₄ was added to the filteredsolid. Then the temperature of the mixture was heated to 110° C. andstirred for 2 hours. The residual solid was filtered and washed withanhydrous heptane five times at 60° C., and two times at ambienttemperature. The final catalyst was collected and dried under vacuum.The type and amount of metal contained in the solid catalyst componentsare reported in Table 1.

b. Propylene Slurry Polymerization

Propylene was polymerized using a laboratory scale 2 liter stainlesssteel autoclave equipped with a stirrer and a jacket for heating andcooling, which was heated to a temperature above 100° C. and expelledall traces of moisture and air with a nitrogen purge. After allowing thereactor to cool to 50° C., under nitrogen, one liter of dry heptane wasintroduced into the reactor, and then 2.5 mmol of triethyl aluminum and0.2 mmol diisopropyldimethoxysilane (DIP-donor) were added, and thenabout 30.0 mg of the solid catalyst was obtained as disclosed above inthe heptane suspension and was added successively into the autoclave.The temperature of the autoclave was kept at 50° C. and the pressure ofautoclave was raised to 5.0 psig by introducing nitrogen. Hydrogen in a150 ml vessel with a pressure of 8 psig was flushed into the reactorwith propylene.

The reactor temperature was then raised to 70° C. and the total reactorpressure was raised to 90 psig by feeding propylene. The reaction wasmaintained for 1 hour under this condition with a continuous propylenefeed to maintain a constant total pressure during the course of thepolymerization. The system was then cooled to 50° C. and vented toreduce the pressure to 0 psig. The reactor was opened and 500 mlmethanol was added to the reactor and the resulting mixture was stirredfor 5 minutes and then filtered to obtain the polymer product. Theobtained polymer was dried under vacuum at 80° C. for 6 hours. Thepolymer was weighed and tested with percent heptane insoluble (% HI).The activity of catalyst (AC) was also calculated. The results arelisted in Table 2.

c. Propylene Bulk Polymerization

A 10-liter stainless steel autoclave was used for propylene bulkpolymerization. The autoclave was purged with nitrogen at 90° C. for 1hour, cooled down to 30° C., and then vacuumed to remove nitrogen. Then3.6 kg propylene, 15.0 liter hydrogen, 50 ml triethyl aluminum hexanesolution (0.6 M) and 5.0 ml diisopropyldimethoxysilane (DIP-donor)heptane solution (0.5 M) were fed into the 10-liter autoclave. Withstirring, 60 mg of the catalysts prepared above in a tube connected tothe 10-liter reactor was flushed into the reactor with 0.2 kg liquidpropylene. The prepolymerization was carried out at 30° C. for 15minutes. Then, the temperature was raised to 80° C. over a period of 10minutes, and the polymerization was run at this temperature for 1 hour.The pressure was then relieved and the temperature of the reactor waslowered to ambient temperature. The collected polymer was weighed andtested with percent heptane insoluble (% HI). The activity of catalyst(AC) was also calculated and the results are listed in Table 15.

Example 2

The procedure of Example 1 was followed except that 1.50 g cobalt (II)chloride is used instead of 1.47 g iron (II) chloride. The type andamount of metal contained in the solid catalyst components are reportedin Table 1. The results of slurry polymerization are reported in Table2.

Example 3

The procedure of Example 1 was followed except that 1.50 g nickel (II)chloride is used instead of 1.47 g iron (II) chloride. The type andamount of metal contained in the solid catalyst components are reportedin Table 1. The results of slurry polymerization are reported in Table2.

Example 4

The procedure of Example 1 was followed except that 1.63 g copper (II)chloride is used instead of 1.47 g iron (II) chloride. The type andamount of metal contained in the solid catalyst components are reportedin Table 1. The results of slurry polymerization are reported in Table2. The results of bulk polymerization are listed in Table 15.

Example 5

The procedure of Example 1 was followed except that 1.46 g manganese(II) chloride is used instead of 1.47 g iron (II) chloride. The type andamount of metal contained in the solid catalyst components are reportedin Table 1. The results of slurry polymerization are reported in Table2. The results of bulk polymerization are listed in Table 15.

Example 6

The procedure of Example 1 was followed except that 1.58 g zinc chlorideis used instead of 1.47 g iron (II) chloride. The type and amount ofmetal contained in the solid catalyst components are reported inTable 1. The results of slurry polymerization are reported in Table 2.

Example 7

The procedure of Example 1 was followed except that 2.50 g iron (II)bromide is used instead of 1.47 g iron (II) chloride. The type andamount of metal contained in the solid catalyst components are reportedin Table 1. The results of slurry polymerization are reported in Table2.

Example 8

The procedure of Example 1 was followed except that 1.76 g iron (II)sulfate is used instead of 1.47 g iron (II) chloride. The type andamount of metal contained in the solid catalyst components are reportedin Table 1. The results of slurry polymerization are reported in Table2.

Example 9

The procedure of Example 1 was followed except that 2.95 g iron (II)perchlorate is used instead of 1.47 g iron (II) chloride. The type andamount of metal contained in the solid catalyst components are reportedin Table 1. The results of slurry polymerization are reported in Table2.

Example 10

The procedure of Example 1 was followed except that 1.88 g iron (III)chloride is used instead of 1.47 g iron (II) chloride. The type andamount of metal contained in the solid catalyst components are reportedin Table 1. The results of slurry polymerization are reported in Table2.

Example 11

The procedure of Example 1 was followed except that the amount of iron(II) chloride is 0.74 g instead of 1.47 g iron (II) chloride. The typeand amount of metal contained in the solid catalyst components arereported in Table 1. The results of slurry polymerization are reportedin Table 2.

Example 12

The procedure of Example 4 was followed except that the amount of copper(II) chloride is 0.82 g instead of 1.63 g copper (II) chloride. The typeand amount of metal contained in the solid catalyst components arereported in Table 1. The results of slurry polymerization are reportedin Table 2.

Example 13

The procedure of Example 1 was followed except that 0.71 g Chromium (II)chloride is used instead of 1.47 g iron (II) chloride. The type andamount of metal contained in the solid catalyst components are reportedin Table 1. The results of slurry polymerization are reported in Table2.

Example 14

The procedure of Example 1 was followed except that 1.02 g palladium(II) chloride is used instead of 1.47 g iron (II) chloride. The type andamount of metal contained in the solid catalyst components are reportedin Table 1. The results of slurry polymerization are reported in Table2.

Example 15

The procedure of Example 1 was followed except that 1.43 g praseodymiumchloride is used instead of 1.47 g iron (II) chloride. The type andamount of metal contained in the solid catalyst components are reportedin Table 1. The results of slurry polymerization are reported in Table2.

Example 16

The procedure of Example 4 was followed except that the amount of copper(II) chloride is 0.41 g instead of 1.63 g copper (II) chloride. The typeand amount of metal contained in the solid catalyst components arereported in Table 1. The results of slurry polymerization are reportedin Table 2.

Example 17

The procedure of Example 2 was followed except that the amount of cobalt(II) chloride is 0.38 g instead of 1.50 g cobalt (II) chloride. The typeand amount of metal contained in the solid catalyst components arereported in Table 1. The results of slurry polymerization are reportedin Table 2.

Example 18

The procedure of Example 1 was followed except that both iron (II)chloride and iron (III) chloride are used to prepare the catalysttogether. 1.47 g iron (II) chloride and 1.88 g iron (III) chloride areadded. The type and amount of metal contained in the solid catalystcomponents are reported in Table 1. The results of slurry polymerizationare reported in Table 2.

Example 19

The procedure of Example 1 was followed except that both calciumchloride and iron (II) chloride are used to prepare the catalysttogether. 1.29 g calcium chloride and 0.98 g iron (II) chloride areadded. The type and amount of metal contained in the solid catalystcomponents are reported in Table 1. The results of slurry polymerizationare reported in Table 2.

Example 20

The procedure of Example 1 was followed except that both copper (II)chloride and cobalt (II) chloride are used to prepare the catalysttogether. 0.39 g copper (II) chloride and 038 g cobalt (II) chloride areadded. The type and amount of metal contained in the solid catalystcomponents are reported in Table 1. The results of slurry polymerizationare reported in Table 2.

Comparative Example 1

The catalyst preparation and polymerization are the same as in Example 1except that 11.0 g anhydrous magnesium chloride, 20.0 g anhydrous ethylalcohol and 250 ml mineral oil were introduced into a 1000 ml reactor.The type and amount of titanium contained in the solid catalystcomponents are reported in Table 1. The results of slurry polymerizationare reported in Table 2. The results of bulk polymerization are listedin Table 15.

TABLE 1 Mole M′ M′Y2n Ratio M/M′ Ti (or M″) Example MX2m (/M″Y′2h)(or/M″) (%) (%) 1 MgCl₂ FeCl₂ 10/1 2.82 3.76 2 MgCl₂ CoCl₂ 10/1 2.564.21 3 MgCl₂ NiCl₂ 10/1 2.74 3.93 4 MgCl₂ CuCl₂ 10/1 2.45 4.11 5 MgCl₂MnCl₂ 10/1 2.76 3.69 6 MgCl₂ ZnCl₂ 10/1 3.21 4.43 7 MgCl₂ FeBr2 10/13.17 3.66 8 MgCl₂ FeSO₄ 10/1 2.21 3.86 9 MgCl₂ Fe(ClO₄)₂ 10/1 3.15 3.2110 MgCl₂ FeCl₃ 10/1 3.44 3.94 11 MgCl₂ FeCl₂ 20/1 2.70 2.03 12 MgCl₂CuCl₂ 20/1 2.39 2.34 13 MgCl₂ CrCl₂ 20/1 3.05 1.88 14 MgCl₂ PdCl₂ 20/12.64 3.74 15 MgCl₂ PrCl₃ 20/1 3.11 4.26 16 MgCl₂ CuCl₂ 40/1 2.97 1.22 17MgCl₂ CoCl₂ 40/1 3.24 1.13 18 MgCl₂ FeCl₂/FeCl₃ 10/1/1 3.35 6.12 19MgCl₂ CaCl₂/FeCl₂ 15/1.5/1 2.78 2.46/2.63 20 MgCl₂ CuCl₂/CoCl₂ 40/1/12.24 1.25/1.32 Comp. 1 MgCl₂ none none 2.44 none

TABLE 2 AC Example (gPP/g Cat · h) HI (%) 1 4140 96.2 2 3337 96.4 3 408396.7 4 4337 98.8 5 5843 97.5 6 3260 97.2 7 3560 95.5 8 3440 95.4 9 296093.0 10 4790 96.1 11 3760 97.1 12 4427 98.1 13 3483 95.6 14 4107 96.2 154687 96.7 16 4717 97.9 17 3753 95.3 18 4420 97.0 19 4080 96.9 20 450397.4 Comp. 1 5233 97.3

Example 21

The procedure of Example 4 was followed except that, during the catalystpreparation, when the temperature of the mixture was gradually raised to60° C., 0.84 g of 9,9-bis(methoxymethyl)fluorene was used instead of 1.0g diisobutyl phthalate. The type and amount of metal contained in thesolid catalyst components are reported in Table 3. The results of slurrypolymerization are reported in Table 4. The 10-liter bulk polymerizationwas conducted by following the procedure of example 1 except that 8.0liter hydrogen was fed into the 10-liter autoclave instead of 15.0 literhydrogen. The results of bulk polymerization are listed in Table 15.

Example 22

The procedure of Example 5 was followed except that the amount ofmanganese (II) chloride is 0.73 g instead of 1.46 g manganese (II)chloride, and that, during the catalyst preparation, when thetemperature of the mixture was gradually raised to 60° C., 0.84 g of9,9-bis(methoxymethyl)fluorene was used instead of 1.0 g diisobutylphthalate. The type and amount of metal contained in the solid catalystcomponents are reported in Table 3. The results of slurry polymerizationare reported in Table 4.

Example 23

The procedure of Example 14 was followed except that, during thecatalyst preparation, when the temperature of mixture was graduallyraised to 60° C. and 0.84 g of 9,9-bis(methoxymethyl)fluorene was usedinstead of 1.0 g diisobutyl phthalate. The type and amount of metalcontained in the solid catalyst components are reported in Table 3. Theresults of slurry polymerization are reported in Table 4.

Comparative Example 2

The catalyst preparation and polymerization are as in comparativeexample 1 except that during the catalyst preparation, when thetemperature of mixture was gradually raised to 60° C., 0.84 g of9,9-bis(methoxymethyl)fluorene was used instead of 1.0 g diisobutylphthalate. The type and amount of titanium contained in the solidcatalyst components are reported in Table 3. The results of slurrypolymerization are reported in Table 4. The 10-liter bulk polymerizationwas conducted by following the procedure of example 1 except that 8.0liter hydrogen was fed into the 10-liter autoclave instead of 15.0 literhydrogen. The results of bulk polymerization are listed in Table 15.

TABLE 3 Mole M′ M′Y2n Ratio M/M′ Ti (or M″) Example MX2m (/M″Y′2h)(or/M″) (%) (%) 21 MgCl₂ CuCl₂ 10/1 2.77 3.35 22 MgCl₂ MnCl₂ 20/1 2.842.10 23 MgCl₂ PdCl₂ 20/1 3.21 3.56 Comp. 2 MgCl₂ none none 3.61 none

TABLE 4 AC Example (gPP/g Cat · h) HI (%) 21 7983 98.6 22 6903 97.8 236690 98.0 Comp. 2 7433 97.5

Example 24

The procedure of Example 4 was followed except that, during the catalystpreparation, when the temperature of mixture was gradually raised to 60°C., 1.1 g of 2,4-pentandiol dibenzoate was used instead of 1.0 gdiisobutyl phthalate. The type and amount of metal contained in thesolid catalyst components are reported in Table 5. The results of slurrypolymerization are reported in Table 6.

Example 25

The procedure of Example 12 was followed except that, during thecatalyst preparation, when the temperature of the mixture was graduallyraised to 60° C., 1.1 g of 2,4-pentandiol dibenzoate was used instead of1.0 g diisobutyl phthalate. The type and amount of metal contained inthe solid catalyst components are reported in Table 5. The results ofslurry polymerization are reported in Table 6.

Comparative Example 3

The catalyst preparation and polymerization are as in comparativeexample 1 except that during the catalyst preparation, when thetemperature of mixture was gradually raised to 60° C., 1.1 g of2,4-pentandiol dibenzoate was used instead of 1.0 g diisobutylphthalate. The type and amount of titanium contained in the solidcatalyst components are reported in Table 5. The results of slurrypolymerization are reported in Table 6.

TABLE 5 Mole M′ M′Y2n Ratio M/M′ Ti (or M″) Example MX2m (/M″Y′2h) (or/M″) (%) (%) 24 MgCl₂ CuCl₂ 10/1 2.43 4.12 25 MgCl₂ CuCl₂ 20/1 2.67 2.26Comp. 3 MgCl₂ none none 3.10 none

TABLE 6 AC Example (gPP/g Cat · h) HI (%) 24 7367 98.1 25 6027 97.9Comp. 3 8350 97.4

Example 26

a. Preparation of the Catalyst

Into a flask were added 5.0 g of anhydrous magnesium chloride, 0.71copper (II) chloride, 23.0 g 2-ethylhexyl alcohol and 27 ml decane. Themixture was stirred at 130° C. for 3 hours and a homogeneous solution isobtained. To the solution was introduced 1.3 g of phthalic anhydride,and the mixture was stirred at 130° C. for 1 hour and phthalic anhydridewas dissolved.

After cooling to room temperature, the resulting solution was dropwiseadded over one and half hours to 150 ml of titanium tetrachloride keptbelow −20° C. in a Schlenk type reactor equipped with a powered stirrerand a fitted filter disc. When the addition was finished, thetemperature of the resulting mixture was gradually increased to 100° C.over a period of five hours. When the temperature reached 100° C., 2.2 gof diisobutyl phthalate (DIBP) was added to the solution. The resultingmixture was stirred at 110° C. for 2 hours. The hot mixture was then hotfiltered at 110° C. To the separated solid was added 180 ml of titaniumtetrachloride. The resulting suspension was maintained at 110° C. andstirred for 2 hours. The hot mixture was filtered to separate a solidwhich was thoroughly washed with decane at 110° C. and hexane at 60° C.until any titanium compound liberating in the filtrate was not detected.The solid catalyst component was dried under vacuum. All the aboveoperations were under nitrogen atmosphere. The types and amounts ofmetal contained in solid catalyst components are reported in Table 7.

b. Propylene Slurry Polymerization

The slurry polymerizations were conducted by using the same procedure asExample 1. The activity of catalyst (AC) was also calculated. Theresults are listed in Table 8.

Example 27

The procedure of Example 26 was followed except that the amount ofcopper (II) chloride is 0.36 g instead of 0.71 g copper (II) chloride.The type and amount of metal contained in solid catalyst components arereported in Table 7. The results of slurry polymerization are reportedin Table 8.

Comparative Example 4

The catalyst preparation and polymerization are the same as Example 26except that 5.0 g of anhydrous magnesium chloride, 23.0 g of2-ethylhexyl alcohol and 27 ml decane was introduced into a flask. Thetype and amount of titanium contained in solid catalyst components arereported in Table 7. The results of slurry polymerization are reportedin Table 8.

TABLE 7 Mole M′ M′Y2n Ratio MM′ Ti (or M″) Example MX2m (/M″Y′2h) (or/M″) (%) (%) 26 MgCl₂ CuCl₂ 10/1 2.86 4.43 27 MgCl₂ CuCl₂ 20/1 2.54 2.89Comp. 4 MgCl₂ none none 3.21 none

TABLE 8 AC Example (gPP/g Cat · h) HI (%) 26 3213 97.7 27 3147 97.9Comp. 4 3123 96.7

Example 28

a. Preparation of the Catalyst

To a reactor completely replacing with nitrogen were charged 7.2 gmagnesium chloride, 1.0 g copper chloride, 150 ml toluene, 6 ml epoxychloropropane and 19 ml tributyl phosphate. The mixture was heated andstirred for 3 hours at 55° C., and after magnesium chloride wascompletely dissolved and a clear solution was obtained, 2.0 g phthalicanhydride was added and the mixture was stirred for one hour. Thesolution was cooled to below −25° C. and 95 ml titanium tetrachloridewas added dropwise over 1.5 hours. The mixture was slowly heated to 80°C. and solid components were formed gradually during the heating. To thesystem was added 2.7 g diisobutyl phthalate and the system was stirredand kept at 80° C. for one hour. After the mixture was filtered, 100 mltoluene was added and the residue was sufficiently stirred and washedtwice at 80° C. The solid precipitate was treated with 100 ml tolueneand 60 ml titanium tetrachloride at 100° C. for 2 hours. Afterfiltration, the solid precipitate was sufficiently stirred and washedwith 100 ml toluene three times at 100° C. The solid precipitate wastreated with 100 ml toluene and 60 ml titanium tetrachloride at 100° C.for 2 hours again. After filtration, the solid precipitate wassufficiently stirred and washed with 100 ml toluene three times at 100°C., and then washed with anhydrous heptane three times at 100° C. andtwo times at room temperature until no titanium was detected. The solidcatalyst was obtained by drying under vacuum. The types and amounts ofmetal contained in solid catalyst components are reported in Table 9.

b. Propylene Slurry Polymerization

The slurry polymerizations were conducted by using the same procedure asExample 1. The activity of catalyst (AC) was also calculated. Theresults of slurry polymerization are listed in Table 10.

Example 29

The procedure of Example 28 was followed except that both manganese (II)chloride and copper chloride are used to prepare the catalyst together.0.96 g manganese (II) chloride and 1.0 g copper chloride are added. Thetype and amount of metal contained in solid catalyst components arereported in Table 9. The results of slurry polymerization are reportedin Table 10.

Example 30

The procedure of Example 28 was followed except that both palladium (II)chloride and copper chloride are used to prepare the catalyst together.0.27 g palladium (II) chloride and 1.0 g copper chloride are added. Thetype and amount of metal contained in solid catalyst components arereported in Table 9. The results of slurry polymerization are reportedin Table 10.

Comparative Example 5

The catalyst preparation and polymerization are the same as in Example28 except that 7.2 g magnesium chloride, 150 ml toluene, 6 ml epoxychloropropane and 19 ml tributyl phosphate were introduced into areactor. The type and amount of titanium contained in solid catalystcomponents are reported in Table 9. The results of slurry polymerizationare reported in Table 10.

TABLE 9 Mole M′ M′Y2n Ratio M/M′ Ti (or M″) Example MX2m (/M″Y′2h)(or/M″) (%) (%) 28 MgCl₂ CuCl₂ 10/1 2.08 4.13 29 MgCl₂ CuCl₂/MnCl₂10/1/1 2.46 3.81/3.54 30 MgCl₂ CuCl₂/PdCl₂ 50/5/1 2.77 4.13/1.52 Comp. 5MgCl₂ none none 1.99 none

TABLE 10 AC Example (gPP/g Cat · h) HI (%) 28 5450 98.7 29 3040 97.9 303887 98.4 Comp. 5 3943 98.1

Example 31

The procedure of Example 28 was followed except that, during thecatalyst preparation, when the temperature of mixture was graduallyraised to 80° C., 3.1 g of 2,4-pentandiol dibenzoate was used instead of2.7 g diisobutyl phthalate. The type and amount of metal contained insolid catalyst components are reported in Table 11. The results ofslurry polymerization are reported in Table 12.

Comparative Example 6

The catalyst preparation and polymerization are in the same way ascomparative example 4 except that during the catalyst preparation, whenthe temperature of mixture was gradually raised to 80° C. and 3.1 g of2,4-pentandiol dibenzoate was used instead of 2.7 g diisobutylphthalate. The type and amount of titanium contained in solid catalystcomponents are reported in Table 11. The results of slurrypolymerization are reported in Table 12.

TABLE 11 Mole M′ M′Y2n Ratio M/M′ Ti (or M″) Example MX2m (/M″Y′2h)(or/M″) (%) (%) 31 MgCl₂ CuCl₂ 10/1 2.58 4.35 Comp. 6 MgCl₂ none none2.67 none

TABLE 12 AC Example (gPP/g Cat · h) HI (%) 31 9583 98.3 Comp. 6 896397.8

Example 32

The procedure of Example 28 was followed except that, during thecatalyst preparation, when the temperature of mixture was graduallyraised to 80° C., 2.8 g of 9,9-bis(methoxymethyl)fluorene was usedinstead of 2.7 g diisobutyl phthalate. The type and amount of metalcontained in solid catalyst components are reported in Table 13. Theresults of slurry polymerization are reported in Table 14.

Comparative Example 7

The catalyst preparation and polymerization are the same as incomparative example 4 except that during the catalyst preparation, whenthe temperature of mixture was gradually raised to 80° C., 2.8 g of9,9-bis(methoxymethyl)fluorene was used instead of 2.7 g diisobutylphthalate. The type and amount of titanium contained in solid catalystcomponents are reported in Table 13. The results of slurrypolymerization are reported in Table 14.

TABLE 13 Mole M′ M′Y2n Ratio M/M′ Ti (or M″) Example MX2m (/M″Y′2h)(or/M″) (%) (%) 32 MgCl₂ CuCl₂ 10/1 3.14 4.37 Comp. 7 MgCl₂ none none3.42 none

TABLE 14 AC Example (gPP/g Cat · h) HI (%) 32 5100 97.8 Comp. 7 580097.3

TABLE 15 AC Example (KgPP/g Cat ·) HI (%) 4 1.80 99.1 5 1.67 97.9 21 1.77 98.3 Comp. 1 2.47 98.5 Comp. 2 2.02 97.7

TABLE 16 Peak range Sample 21 Comp. 2 (δ ppm) δ (ppm3) Fraction (%)Fraction (%) 22.6-21.7 mmmm 95.7 93.0 21.7-21.4 mmmr 1.7 3.1 21.4-21.2rmmr 0.2 0.5 21.2-21.0 mmrr 0.9 1.3 21.0-20.7 mmrm + rrmr 0.4 0.720.5-20.3 rrrr 0.4 0.4 20.3-20.0 rrrm 0.3 0.5 20.0-19.8 mrrm 0.4 0.5

As the data in tables 1 to 16 demonstrate, the polymerization of olefinsusing catalysts prepared from component (A) prepared in the examplesfulfill the requirements of present invention, and with silicon compound(B) and organoaluminium compound (C), makes it possible to achieve apolyolefin catalyst system having high stereo-regularity and highpolymerization activity with high yield. The produced polymersdemonstrate improved isotacticity at high activities compared with thecomparative examples. As demonstrated in the examples 4, 21 and 24 andcomparative examples 1, 2 and 3, the polymers prepared using thecatalyst components of the present invention exhibit higher HI %(heptane insoluble), which is consistent with the ¹³C NMR data ofexamples 21 and comparative examples 2 listed in table 16. Heptaneinsoluble (HI %) and ¹³C NMR results of resonances associated withdifferent pentads exhibit the improved solvent insolubility andisotacticity.

Therefore, the present invention is well adapted to attain the ends andadvantages mentioned as well as those that are inherent therein. Theparticular embodiments disclosed above are illustrative only, as thepresent invention may be modified and practiced in different butequivalent manners apparent to those skilled in the art having thebenefit of the teachings therein. Furthermore, no limitations areintended to the details of construction or design herein shown, otherthan as described in the claims below. It is therefore evident that theparticular illustrative embodiments disclosed above may be altered ormodified and all such variations are considered within the scope andsprit of the present invention. Whenever a numerical range with a lowerlimit and an upper limit is disclosed, and number falling within therange is specifically disclose. Moreover, the indefinite articles “a” or“an”, as use in the claims, are defined herein to mean one or more thanone of the element that it introduces.

What is claimed is:
 1. A catalyst system for polymerizing orcopolymerizing an a-olefin, comprising: a catalyst component (A)obtained by a process comprising reacting: a magnesium complex (A-1)containing acid salts of group IB-VIIIB elements formed by contacting amagnesium halide either as a solid or in a liquid medium represented byformula MgXn(OR)2-n with an acid salt solution of group IB-VIIIB metalsrepresented by formula MmYp; wherein X is selected from F—, Cl—, Br—,I—, NO3-, NO2-, R′COO—, SO42-ClO3-, BrO3-, IO3-, ClO4-, and R′(COO)22-;M is at least one metal selected from group IB-VIIIB; Y is an acidradical such as Cl—, Br—, I—, NO3-, NO2-, R″COO—, SO42-, ClO3-, BrO3-,IO3-, ClO4-, and R″(COO)22-; R, R′, and R″ are hydrocarbon groups havingfrom 1 to 10 carbon atoms, and n is an integer from 0 to 2; m and p arenumbers from 1.0 to 5.0; an internal electron donor (A-2) of diester ordiether or composite compounds; and a titanium compound (A-3) of thegeneral formula Ti(OR)lX4-l, wherein X is a halogen atom and R is ahydrocarbon group having from 1 to 10 carbon atoms, and l is a numberfrom 0 to 4; and a silicon compound (B) represented by the generalformula: SiRl(OR′)4-l and SiRl(NR2′)4-l, wherein R is hydrogen, an alkylgroup, or an aryl group, R′ is alkyl group or aryl group, and l is anumber from 0 to 4; and an organoaluminium compound (C).
 2. The catalystsystem of claim 1, wherein the magnesium complex (A-1) is prepared bydissolving the magnesium halide and the acid salt solution in a solventmixture of an organic epoxy compound and an organic phosphorus compoundto form a homogeneous solution.
 3. The catalyst system of claim 2,wherein the organic epoxy compound is selected from the group consistingof oxides of aliphatic olefins and diolefins; oxides of halogenatedaliphatic olefins and diolefins; and glycidyl ethers.
 4. The catalystsystem of claim 2, wherein the organic epoxy compound is selected fromthe group consisting of ethylene oxide, propylene oxide, butylene oxide,butadiene oxide, butadiene dioxide, epoxy chloropropane, methyl glycidylether, and diglycidyl ether.
 5. The catalyst system of claim 2, whereinthe organic phosphorus compound is selected from the group consisting oftrimethyl phosphate, triethyl phosphate, tributyl phosphate, triphenylphosphate, trimethyl phosphite, triethyl phosphite, tributyl phosphiteand triphenyl phosphite.
 6. The catalyst system of claim 1, wherein themagnesium complex (A-1) is prepared by dissolving the magnesium halideand the acid salt solution in a solvent mixture of alcohol andhydrocarbon or aromatic hydrocarbon solvents.
 7. The catalyst system ofclaim 1, wherein the magnesium complex (A-1) is prepared in the form ofspherical particles derived from alcohol adducts.
 8. The catalyst systemof claim 1, wherein the acid salt is selected from Cerium (III)fluoride, cerium (III) chloride, cerium (III) bromide, cerium (III)iodide, chromium (II) fluoride, chromium (II) chloride, chromium (II)bromide, chromium (II) iodide, chromium (III) fluoride, chromium(III)chloride, chromium (III)bromide, chromium (III) iodide, chromium(III) nitrate, cobalt (II) fluoride, cobalt (II) chloride, cobalt (II)bromide, cobalt (II) iodide, copper (II) fluoride, copper (II) chloride,copper (II) bromide, copper (II) iodide, copper (II) nitrate, dysprosium(II) chloride, dysprosium (II) bromide, dysprosium (II) iodide,dysprosium (III) fluoride, dysprosium (III) chloride, dysprosium (III)bromide, dysprosium (III) iodide, erbium fluoride, erbium chloride,erbium bromide, erbium iodide, erbium nitrate, europium (II) fluoride,europium (II) chloride, europium (II) bromide, europium (II) iodide,europium (III) fluoride, europium (III) chloride, europium (III)bromide, europium (III) iodide, gadolinium (II) chloride, gadolinium(III) fluoride, gadolinium (III) chloride, gadolinium (III) bromide,gadolinium (III) iodide, gadolinium (III) nitrate, gold (III) fluoride,gold (III) chloride, gold (III) bromide, gold (III) iodide, holmiumfluoride, holmium chloride, holmium bromide, holmium iodide, iron (II)fluoride, iron (II) chloride, iron (II) bromide, iron (II) iodide, iron(III) fluoride, iron (III) chloride, iron (III) bromide, iron (III)iodide, iron (II) nitrate, iron (III) nitrate, Iron (II) sulfate, Iron(II) perchlorate, lanthanum fluoride, lanthanum chloride, lanthanumbromide, lanthanum iodide, lanthanum nitrate, lutetium fluoride,lutetium chloride, lutetium bromide, lutetium iodide, manganese (II)fluoride, manganese (II) chloride, manganese (II) bromide, manganese(II) iodide, manganese (II) acetate, manganese (II) nitrate, molybdenum(II) fluoride, molybdenum (II) chloride, molybdenum (II) bromide,molybdenum (II) iodide, molybdenum (III) fluoride, molybdenum (III)chloride, molybdenum (III) bromide, molybdenum (III) iodide, neodymiumfluoride, neodymium chloride, neodymium bromide, neodymium iodide,neodymium nitrate, nickel (II) fluoride, nickel (II) chloride, nickel(II) bromide, nickel (II) iodide, nickel (II) nitrate, niobium (III)fluoride, niobium (III) chloride, niobium (III) bromide, osmium (III)chloride, osmium (III) bromide, palladium (II) fluoride, palladium (II)chloride, palladium (II) bromide, palladium (II) iodide, palladium (II)nitrate, praseodymium fluoride, praseodymium chloride, praseodymiumbromide, praseodymium iodide, praseodymium nitrate, rhenium (III)fluoride, rhenium (III) chloride, rhenium (III) bromide, rhenium (III)iodide, rhodium (III) fluoride, rhodium (III) chloride, rhodium (III)bromide, rhodium (III) iodide, rubidium fluoride, rubidium chloride,rubidium bromide, rubidium iodide, rubidium nitrate, ruthenium (III)fluoride, ruthenium (III) chloride, ruthenium (III) bromide, ruthenium(III) iodide, samarium (II) fluoride, samarium (II) chloride, samarium(II) bromide, samarium (II) iodide, samarium (III) fluoride, samarium(III) chloride, samarium (III) bromide, samarium (III) iodide, scandiumfluoride, scandium chloride, scandium bromide, scandium iodide, scandiumnitrate, thulium fluoride, thulium chloride, thulium bromide, thuliumiodide, thulium nitrate, tungsten (II) chloride, tungsten (II) bromide,tungsten (II) iodide, tungsten (III) bromide, tungsten (III) iodide,vanadium (II) fluoride, vanadium (II) chloride, vanadium (II) bromide,vanadium (II) iodide, vanadium (III) fluoride, vanadium (III) chloride,vanadium (III) bromide, vanadium (III) iodide, ytterbium (II) chloride,ytterbium (II) bromide, ytterbium (II) iodide, ytterbium (III) fluoride,ytterbium (III) chloride, yttrium fluoride, yttrium chloride, yttriumbromide, yttrium nitrate, zinc fluoride, zinc chloride, zinc bromide,zinc nitrate, zinc acetate, zinc chlorate, zinc perchlorate, andzirconyl chloride.
 9. The catalyst system of claim 1, wherein thediester is selected from diacid and diol.
 10. The catalyst system ofclaim 1, wherein the diester is selected from diesters of phthalic acid,naphthalene dicarboxylic acid, malic acid, succinic acid, and Glutaricacid.
 11. The catalyst system of claim 1, wherein the diester isselected from diesters of 1,2-diols, 1,3-diols, 1,4-diols, and1,5-diols.
 12. The catalyst system of claim 1, wherein the diether isselected from diethers of 1,2-diols, 1,3-diols, 1,4-diols, and1,5-diols.
 13. The catalyst system of claim 1, wherein theorganoaluminium compound (C) is selected from trimethylaluminium,triethylaluminium, triisopropylaluminium, triisobutylaluminium, andcombinations thereof.
 14. The catalyst system of claim 1, wherein thesilicon compound (B) is selected from one or more alkoxygroup-containingorganosilicon compounds and nitrogen-containing compounds.